Lock.



A. M. H. DE BRUYCKER..

LOCK.

APPLICATION FILED Nov. zo, 190s.

91 7,536. Patented Apr. 6, 1909.

Ilnumi WITNESSES /Nl/E/VTR THE Nonms PETERs ga.. WASHINGTON, o. c.-

g? Y I Byvmf,

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NE ST AUGUST M. H. DE BRUYCKER, OF NEW YORK, N. Y.

LOCK.

Application led November 20, 1908.

.To all whom it may concern.'

Be it known that l, AUGUST M. H. DE BRUYCKER, a citizen ol' the United. States, and a resident oll the city ol" New York, borough ol' Brooklyn, in the .county ol Kings and State ot' New York, have invented a new and Improved Lock, ol' which the l'ollowing is a l'ull, clear, and exact description.

The object ol the invention is to provide a new and improved lock having bolt formed o'l' hook members, capable olA being moved in the direction ol' their length and adapted to be spread apart to engage the keeper with the hook ends, thus holding the bolt pivotally against retraction unless actuated by the proper key.

A practical embodiment ol the invention is represented in the accompanying drawings forming a part ol' this specification, in which similar' characters ol' reference indicate corresponding parts in all the views.

Figure l is a side elevation of the improvement and showing the cover or" the casing renioved and the bolt shot out into engagement with the keeper', 'he latter' being shown in section; Fig. 2 is a like view ol' the im.- provement and showing the bolt in a re tracted position; `Fig. 3 is a sectional plan view ol the same on the line ol l g Fig. 4 is an enlarged perspective view ol' the ilug, Fig. 5 is a similar view oll the spreading cam 'l'or the bolt members; and Fig. 6 is a perspective view oi` the key.

The casing A of the lock is provided with a guideway A, -in which is mounted a bolt l'ormed of two members B and B, pivotally connected with each other at their rear ends by a pivot pin C, and provided at their lorward ends with outwardly-extending hooks B2, B3 i'or engagement with a keeper D, as plainly indicated in Fig. l. The pivot pin is pivotally connected by a link E with the wrist pin F ol' a plug l?, mounted to turn in a bearing Yl'ormed in the guideway A oit' the lock casing A, and the said plug F is provided with a keyhole F2, adapted to be engaged by a key G for turning the plug F, with a view to slide the bolt outward or inward according to the direction in which the plug F is turned by the key. The opposite 'faces ol the bolt members B and B are recessed, as indicated at B4 in Fig. l, and in the said recess lits a spreading cam H having a keyhole H adapted to be engaged by the key G at the time the bolt has been shot out into engagement with the keeper D, the key- Specication of Letters Patent.

Patented April 6, 1909.

serial No. 463,552.

I hole H then registering with the keyhole F2 olV the plug l?.

shown in l 1g. 2, then the keyhole of the spreading cam H is out of register with the keyhole of' the plug ll", and e bolt members B and B are held closed when retracted, ly springs l arranged in the guideway A and pressing on hers B and B, as plainly indicated in YFigs. l and 2. lWhen the bolt is in the withdrawn or retracted position shown in 2, and it is desired to lock the door or other part on which the lock is applied, then the operator inserts the key G in the keyhole l2, and through a keyhole A3 formed in the cover A2 of the lock casing A, and then the operator turns the key so as to turn the plug r in its hearing, and in doing so the link E shoots the bolt h outward, so that the bolt passes with its outer hook ends through the opening in the keeper D, the bolt members B', B2 l seing held in a closed position during this outward. movement by the action of the springs l. T he holt during this outward movement carries the spreading cam H along so that the keyhole H thereof linally registers with the keyhole liz, and the operator now pushes the key G farther in so as to engage the bit ol the key with the keyhole ll. Now a further turning of the key G on the part of the operator causes a turning of the spreading cam H, so that the bolt members B and B are spread apart, and their hooks B3, B3 engage the back of the keeper D, as plainly shown in YFig. l.. When the key G is now withdrawn it is evident that the bolt cannot be pushed back into a retracted position hy a person inserting a knife or other tool between the front end of the casing A and the keeper D, thus preventing unlocking of the door by unauthorized persons. lWhen it is desired to unlock the door with the proper key G, then the latter is re-insertcd through the keyholes A3, F3 and H, after which tij-e key is turned to turn the spreading cam H back into normal position. l/Vhen this tal-fes place the springs l act on the bolt members B, B, to

closed position, and then the key is partly l withdrawn to move the bit thereof out of the keyhole H and into the keyhole l, after which the key is again turned to rotate the plug F, whereby the latter causes the link E to withdraw the bolt members B, B back into the position shown in 2. The out When the l12olt is in a'retracted position asv theouter sides ot the holt mein swing the same toward each other into a 'roo Cfr

Ward sliding movement of the bolt may be limited by suitable means, such, for instance, as the pivot pin U abutting against the guide- Way A at the time the bolt is shot out to the desired extent (see lig. 3).

From the foregoing it will be seen that by the arrangementdescribed, the bolt is moved in the direction of its length by key-oontrolled means, and the bolt members are spread apart at the time the bolt is shot out i by key-controlled means, that is, the said means for moving the bolt in the direction of its length and for spreading the bolt members apart are controlled by the same key, which may be of any approved construction.

Having thus described my invention, l claim as new and desire to secure by Letters Patent:

l. A lock comprising a bolt formed or" members pivoted together at one end and adapted to spread apart, means connected with the pivot of said bolt for moving the bolt in the direction ol its length, and means lor spreading the members ot' the bolt apart.

2. fr lock comprising a bolt formed of members pivoted together at one end and adapted to spread apart, means connected with the pivot oi' said bolt l'or moving the bolt in the direction oi' its length, means for spreading the members of the bolt apart, and sai-ings for normally closing the bolt members.

3. it lock, comprising a bolt Vformed oi hook members pivotally connected with each other, a plug, a connection between the plug and` the bolt to move the latter in the direction ol' the length ol the bolt on turning the plug, and a cam moving with the bolt i'or .spreading the said bolt men'rbers.

4. [i lock comprising a bolt formed of members having hooks at one end and pivotally connected with each other at the other end, a plug mounted to turn, means for connecting the plug with the bolt at the pivoted ends of the bolt members, to move the bolt in the direction ol' its length on turning the plug, a device l'or spreading the said bolt members, the plug and the said spreading device having key holes adapted to register with each other, and a key i'or successively engaging the said key holes to actuate the said plug and the said spreading device.

A lockcomprising a bolt formed ol hook members pivotally connected with each other, a plug having a keyhole, a link connecting the said plug With the bolt to move the latter in the direction ol' its length on turning the plug, a spreading cam between the said bolt members and moving with the bolt, the said cam having a keyhole in register with the said plug keyhole at the time the bolt is shot out, and a key l'or successive engagement with the said keyholes.

6, A. lock comprising a bolt formed of members provided at their forward ends with outwardly-eXtending hooks and pivotally connected with each other at their rear ends, key-controlled means mounted to turn and connected with the bolt for moving the bolt in the direction of its length, and.y .key-controlled means mounted to turn and moving with the bolt for spreading the bolt members -apart at the time the bolt is shot out.

7. A lock. comprising a bolt formed of members provided at their forward ends with outwardly-extending hooks and pivotally connected with each other at their rear ends, key-controlled means for moving the bolt in the direction of its length, a key-controlled cam carried by the bolt vfor spreading the bolt members apart at the time the bolt is shot out, and springs pressing the said bolt members to hold the latter normally in a closed position.

8. A lock comprising a casing having a guideway, a bolt mounted in said guideway and formed of two members having hooks at one end for engagement with a keeper, a pivot pin connecting the other ends of the members together, a plug mounted to turn, a link connecting said plug with the pivot of the bolt to move the bolt in the direction ol' its length on turning the plug, the said bolt members being provided with opposing recesses, a cam lor spreading the bolt mem bers, the said cam engaging the recesses in the bolt members and moving with the holt, and means i'or successively actuating the plug and the cam.

Q. A lock comprising a casing having a cover plate provided with a key hole, a bolt having members pivotally connected with each other at one end, a tapering guideway in said casing in which the bolt is mounted to slide, a key-controlled plug mounted to turn in said casing and provided with a key hole registering with the key hole of the cover plate, a connection between the said plug and the said bolt to move the latter in said guideway in the direction of the length ol' the bolt on turning said plug, a keycontrolled cam i'or spreading the bolt members, the said cam being held between the members ol' the bolt and moving with the latter' and having a key hole adapted to register with the key hole of the plug at the time the boltl is shot out, and springs arranged in said guideway and pressing on the outer sides of the bolt members.

1n testimony whereof 1 have signed my name to this specification in the presence ol' two subscribing witnesses. i

AUGUST M. H. DE BRUYCKER. llilitnesses FREDERICK LUTKE,

Louis YEAnsLEY. 

